Found this info for you....
Hot Spots
Hot Spots happen more often than not on a broken or rough coated dog who, for one reason or another, is exposed to more heat or humidity than his/her system likes.
Some people maintain that they are the result of an allergy -- generally to fleas. I don't know how valid this is. I do know that in order to keep a hot spot from getting too severe, you must take immediate action.
If possible, clip the fur shorter so that heat/humidity isn't trapped under the outer coat. Then, to help with the itching, add Vitamin C which is a natural antihistamine to help control the irritation. Add essential fatty acids to the dog's diet. You can go to your vet and pay a lot of money for Omega 3 EFA's -- or you can go to the drug store and pick up cod liver oil which is Omega 3 EFA's. Salmon oil is also good. If you want to take into account the full spectrum of EFA's , both the Omega 3 and the Omega 6, then you should visit your health food store. They should have something suitable.
If the hot spot is oozing, then apply powdered goldenseal or a mixture of goldenseal and myrrh. This will help dry the area out and heal at the same time. Don't worry if your dog licks at this powder. It won't hurt him/her and will even help her heal if taken internally. I have found, however, that dog's don't like the taste of this all by itself, so it actually can be a deterrent to licking of the area.
If the area is scabby and dry, apply the goldenseal/myrrh ointment that you make yourself or that you have purchased in a health food store. You can also use an antibiotic ointment that you get in the drug store, but be aware that the base for those ointments is petroleum based and not necessarily good for your dog to ingest.